EPOCHE 2013 LLP ERASMUS IP Excellence in Photogrammetry for Open Cultural Landscape & Heritage Education http://la.teikav.edu.gr/epoche
Transcript
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Excellence in Photogrammetry for Open Cultural Landscape &
Heritage Education http://la.teikav.edu.gr/epoche
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Project Thesis of Group C Stefanos Athanasios BERGOUNIS [TEI-K,
GR] Simina CIOCAN [UPT, RO] Alexandru Ionel GZDAC [UAB, RO] Istvan
VEGH [UWH-GEO, HU] Klra MARTVOOV [STU Svf, SK]
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Contents Section 1: Introduction Section 2: Digital
Photogrammetry Section 3: Photogrammetric Image Processing Section
4: Digital 3D Modeling Section 5: Conclusions & Discussion
Acknowledgements Bibliography & References Appendix A:
Description & Historical Data/Information of the Target
Monuments Appendix B: The 3D Modeler & The VeCAD SoftWare
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1. Introduction Group 3 members came to Thassos with EPOCHE
2013 LLP ERASMUS IP in order to produce digital 3D models of the
objects with historical interest. The software used was the
following: VeCAD Software PhotoModeler Scanner Software AgiSoft
PhotoScan Sofware
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Thassos is a little green and mountainous greek island which is
famous for its clean beaches. The island is in front of the
Macedonian dry land and the mouth of the river Nestos and it is the
12th largest by area. Thasos island is located in the northern
Aegean sea approximately 7 km from the northern mainland and 20 km
south-east of Kavalla, and is of generally rounded shape, without
deep bays or significant peninsulas.
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2. Digital Photogrammetry Digital Photogrammetry is the art of
using computers to obtain the measurements of objects in a
photograph. It typically involves analyzing one or more existing
photographs or videos with photogrammetric software to determine
spatial relationships. Although commonly used to create
topographical maps, it may also be useful in a variety of
industries such as architecture, manufacturing, police
investigation, and even plastic surgery
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The Equipment Sony Alpha DSLR - a350 Camera type Digital SLR
Optical Zoom Not Applicable Megapixels 14.2 Image Sensor CCD Image
Stabilisation CCD Shift LCD Monitor - 2.7 inch Flash Modes Auto
Flash, Red- eye reduction, Flash OFF Memory card slot CompactFlash
(CF), Memory Stick PRO, Memory Stick PRO Duo, Microdrive, Memory
Stick Duo
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The Equipment SOUTH Total Station NTS-352R Reflectorless 2
Features: Extended Internal Memory (Max. 24000 Points) Handy EDM
Head Complete Application Programs Convenient Data Management
System Superior Waterproof & Dustproof Capabilities, IP66 Min.
Reading 0.1mm
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The Equipment Specifications: Color: Yellow Accuracy: 2
Battery: Ni H, Rechargeable Operating time: 8 hours (small
battery), 10 hours (big battery) Charging time: 3 hours Display:
LCD, 4 lines Operating temperature: -20 - +45 Dimension:
L200H350W180 mm Weight: 5,8 kg
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3. Photogrammetric Image Processing Calibration Taking photos
of the calibrates figures Process
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Calibration Software used: a) Calib: -used to calibrate the
photos -the result of the calibration is the *.dat file
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Creating an orthophoto-mosaic Visited the building Made a
sketch Photoshooting Measured the building
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Creating an orthophoto-mosaic Software used: VeCAD
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Creating an orthophoto-mosaic - insert the calibrated photos
one by one - data processing - obtaining the final result:
rectified images
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Creating an orthophoto-mosaic Software used: AutoCAD
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Creating an orthophoto-mosaic Used for - better precision - to
highlight the most important details: * doors * windows * brick *
shape of the building
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Creating a 3D model of a Pillar Visited the object Made a
sketch Measured two distances Photo Shooting
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Creating a 3D model of a Pillar Software used : PhotoModeler
Scanner
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Creating a 3D model of a Pillar Selected 11 photos and 2
distances Imported photos in PhotoModeler Scanner Calibration of
the camera Oriented the photos Found the common points Selected,
referenced and processed the common points Joined the elements of
the pillar
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Creating a 3D model of a Pillar Opened 3D view Created surfaces
Created photo set of the photos Added a new material Defined a
scale, with the help of a distance Exported the 3D model in three
different formats (*.dxf, *.wrl, *.3ds)
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Creating a 3D model of a monument Visited the object Made a
sketch Measured two distances Photo Shooting
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Creating a 3D model of a monument Software used: PhotoModeler
Scanner
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Creating a 3D model of a monument Selected 7 photos and 2
distances Imported photos in PhotoModeler Scanner Calibration of
the camera Oriented the photos Found the common points Selected,
referenced and processed the common points Joined the elements of
the pillar
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Creating a 3D model of a monument Opened 3D view Created
surfaces Defined a scale, using a distance Exported the 3D model in
three different formats (*.dxf, *.wrl, *.3ds)
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Creating a 3D model of a statue Visited the object Made a
sketch Measured two distances Photo Shooting with a Sony Alpha DSLR
a350 camera
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Creating a 3D model of a statue Software used : AgiSoft
PhotoScanner
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Creating a 3D model of a statue Took 20 photos and 2 distances
Inserted photos Selected the area around the statue Aligned the
photos Built geometry of the statue Built texture Defined a scale,
using a distance
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Digital 3D Modeling
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Discussion A fascinating aspect is the fact that in the
beginning of the project the object was in the centre and only the
viewer was the one who was moving around it, but with the use of
modern software and low cost equipment it became possible for the
viewer to be the one who rotates the object.
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Conclusions The Excellence in Photogrammetry for Open Cultural
Landscape & Heritage Education project gave a chance to develop
new skills, by learning very modern and useful software. The
purpose of the project was to create a 2D Model, using the VeCAD
SoftWare and a 3D Model with the help of PhotoModeler Scanner
Software and PhotoScan Software. An important aspect of the
software is the fact that gives the opportunity to see a 3D model,
which can be used for many purposes. One of these is the
restoration of objects by the archeologists.
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Conclusions Also a benefit of the software is that it does not
require a lot of preparation, needing only to have a camera with at
least 3 mega pixels, which is calibrated, a measuring tape and a
total station. The process of the data does not take a long time if
all the equipments needed for the software to work are in place.
The software also gives the chance to compare the automatic
solutions to the manual ones. The importance of the projects
reflects in the practical usefulness of the software in order to
create 2D and 3D models of objects, using low cost photogrammetry
and equipment.
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Acknowledgements Group 3 members came to Thassos with the
EPOCHE 2013 LLP ERASMUS IP in order to produce digital 3D models of
the objects with historical interest. The project was financed by
the European Union. First of all, group 3 members would like to
thank the Kavala Institute of Technology, Department of Landscape
Architecture for their support, in providing guidance and
generosity for all the software used during the project. Also we
would like to thank the ERASMUS IP for the opportunity they have
given us. We would like to especially thank the professional staff
of the Kavala Institute of Technology, Department of Landscape
Architecture, for their assistance during the project, Mr.
Styliadis, Mr. Sechidis, Mr. Vassilios Tsioukas for their
dedication to the project and for their participation.
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Acknowledgements We express our sincere gratitude to Dr. Tams
Jancs, Mr. Gergely Lszl, Mr. Jan ERDELYI, Mr. Alojz KOPACIK, Mr
Herban Sorin, Mrs. Carmen Grecea, Mrs. Vilceanu Beatrice, Mrs. Popa
Alexandra for their guidance and help. Without them our projects
would not have been able to achieve the best quality. Also the
group 3 members wish to thank one more time the Kavala Institute of
Technology, Department of Landscape Architecture for their effort
to make this experience unique, productive and agreeable
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Bibliography & References 1. Prof. Athanasios STYLIADIS
(Historical photography-based Computer-Aided Architectural Design:
Demolished buildings information modeling with reverse engineering
functionality) 2.Prof. Athanasios STYLIADIS (Image-based 3D
Modeling Close-Range Photogrammetry: Extraction of 3D Geometry
& Quality Information) 3 Prof. Tams JANCSO (3D modelling in the
terrestrial photogrammetry 4.Dr.-Ing. Laszlo GERGELY 3D Gis
Solution applied in surveying engineering 5.A/Prof. Dr.-Ing. Sorin
HERBAN & Prof. Dr.-Ing. Carmen GRECEA Excellence in
Photogrammetry for Open Cultural Landscape & HeritageEducation
"Politehnica" University of Timisoara Presentation
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Bibliography & References 6.Lecturer Dr.-Ing. Alexandra
POPA Low Cost Photogrammetry: Creating, Integrating and
Visualization of 3D Models Using Google Platform File 7.
http://la.teikav.edu.gr/epoche/ 8. http://www.geosolution.com/
9.http://www.getsurveying.com/ 10. http://www.imaging-resource.com/
11. http:// www.wikipedia.org
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Appendix A: Description & Historical Data/Information of
the Target Monuments The war memorial monument it is located in the
square park in Limenas and it is from the community of Thassos, in
the memory of the fallen soldiers
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Appendix A: Description & Historical Data/Information of
the Target Monuments The pillar is located also in the square park
of Limenas and it is part of an early Christian basilica
church.
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Appendix A: Description & Historical Data/Information of
the Target Monuments The Crouching Lion is a statue of a lion,
located in the garden of the Archaeological Museum of Thasos.
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Appendix B: The 3D Modeler & The VeCAD SoftWare The VeCAD
Software VeCAD is a 2D vector graphics library. You can use it to
create your own 32 bit Windows-based CAD/GIS applications written
in the popular Visual IDE languages. The Library is completely
documented and source code boilerplate examples are furnished in
VC++, BC++, C++ Builder, Delphi and Visual Basic. VeCAD supports
its own native 'VEC' format, import/export DXF, HPGL, CNC and
support for the direct insertion of bitmap objects. Some of it is
many features include great snapping tools, a unique multi-page
data format, and, precision control over layers, line types,
colors, line widths, view-ports, and text styles. The VeCAD,
created originally by Oleg Kolbaskin, has been modified by Dr.
Vassilios Tsioukas, to perform basic photogrammetric processes
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Appendix B: The 3D Modeler & The VeCAD SoftWare
PhotoModeler Scanner is a 3d scanner that provides results similar
to a 3d laser scanner. This 3d scanning process produces a dense
point cloud (Dense Surface Modeling, DSM) from photographs of
textured surfaces of virtually any size. PhotoModeler Scanner is a
sophisticated tool to build accurate Dense Surface Models and get
measurements from your photos. Use PhotoModeler Scanner to build:
Dense Surface Models where a large number of 3D points are needed.
Models that traditionally would require a 3d laser scanner
Scale-independent object modeling - model small objects or big
scenes By combining SmartMatch technology and DSM the efficiency of
PhotoModeler Scanner really shines.
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Appendix B: The 3D Modeler & The VeCAD SoftWare Agisoft
Photoscan Agisoft PhotoScan Pro allows to generate high resolution
georeferenced orthophotos (up to 5 cm accuracy with GCP) and
exceptionally detailed DEMs / textured polygonal models. The fully
automated workflow enables a non-specialist to process thousands of
aerial images on a desktop computer to produce professional class
photogrammetric data. Aerial and close-range triangulation Point
cloud generation (sparse / dense) Polygonal model generation (plain
/ textured) Setting coordinate system Digital Elevation Model (DEM)
generation True orthophoto generaton Georeferencing using flight
log and / or GCPs Multispectral imagery processing
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EPOCHE 2013 - The Group C members Simina CIOCAN [UPT, RO]
[email protected], was born in 1991, in Reia City, Cara - Severin
County, Romania and studies at Politehnica University of Timioara,
Faculty of Construction, Section Geodesy, Specialty Surveying and
Land Measurements. She is interested in sports, travelling,
[email protected] Istvan VEGH [UWH-GEO, HU],
[email protected], was born in 1990, in Mor City, Fejer County,
Hungary and studies at University of West Hungary, Faculty of
Geoinformatics, Speciality Surveying. He is interested travelling,
meeting new people and sports for example riding motorcycles.
[email protected]
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Alexandru Ionel GZDAC [UAB, RO] [email protected] was
born in 1991, in Trgu Mure City, Mure County, Romania and studied
at 1 Decembrie 1918 University of Alba Iulia, Faculty of Science,
Section Surveying and Land Measurements. He is interested in
sports. [email protected] Klra MARTVOOV [STU Svf, SK]
[email protected] was born in 1990, in Doln Kubn, Slovakia
and studied at Slovak University of Technology in Bratislava in
Faculty of Civil Engineering. She is interested in history.
[email protected] Stefanos Athanasios BERGOUNIS [TEI-K,
GR] [email protected] was born in 1987 and grew up in
Athens. He studied Landscape Architecture in Greece and is
interested in computer programming and building.
[email protected]